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Finding the Fourth Proportional to 135,980.48, 203,900.68 and 61,036.38

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Solution

The fourth proportional to 135,980.48, 203,900.68 and 61,036.38 is: 91,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,980.48 : 203,900.68 = 61,036.38 : x
  2. Step 2: Convert to fraction form
    135,980.48/203,900.68 = 61,036.38/x
  3. Step 3: Cross multiply
    135,980.48x = 203,900.68 × 61,036.38
  4. Step 4: Simplify right side
    135,980.48x = 12,445,359,386.74
  5. Step 5: Solve for x
    x = 12,445,359,386.74/135,980.48
  6. Step 6: Final answer
    x = 91,523.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.